How to know which Cisco Equipment is plugged to a specific port using API of Cisco Prime Infrastructure 2.1

Want to know if it is possible to know which Equipment is been used at a specific port.

        Here is the issue:

      Need to monitor 900 Sites and more with the API. At this moment I'm able to have all Sites that are Down at 100% = UNREACHABLE

        To do that  using the API like This :  https://XXXXXXXX/webacs/api/v1/data/Devices?.full=true&_ctx.domain=%22STORE%22&reachability=%22UNREACHABLE%22

        This provides the list of all devices that are Down.

         But some sites will be able to go on Dial-up Backup when High Speed came down.

        This will put Tunnel 3 UP in Cisco Prime and all other Tunnel Down.

Hence is it possible to do a query to the API to have all devices that have Tunnel 3 UP 

       This monitoring will run every 5 minutes.

      But cannot ask the API every 5 minutes about all equipment that are not UNREACHABLE, to know if they are on Dial-up backup. 

At present we don't support this use case.  Our filtering either ANDs all of the criteria together (the default behavior) or ORs all of the criteria together (if you specify .or_filter=true).  Also, when we filter collections (like interfaces in Inventory Details), we are finding the root entities that match the criteria, rather than finding a collection element that matches all of the criteria. 

So if you filter for operational state as being UP and an interface name of Tunnel3, the default behavior will be to find all devices that have any interface with an operational state of UP and have some interface named Tunnel 3.